const path = require('path');
const builtinModules = require('module').builtinModules;
const babel = require('rollup-plugin-babel');
const commonjs = require('rollup-plugin-commonjs');
const json = require('rollup-plugin-json');
const replace = require('rollup-plugin-replace');
const resolve = require('rollup-plugin-node-resolve');
const url = require('rollup-plugin-url');

const entryManifest = require('./plugins/entryManifest');

const env = process.env.NODE_ENV || 'development';
const dev = env === 'development';

// Allow storing env vars in .env in dev.
if (dev) require('dotenv').config();

const manifest = entryManifest();

const client = ['main', 'autoIndex'].map(entryName => {
  return {
    external: ['react', 'react-dom', '@emotion/core'],
    input: `modules/client/${entryName}.js`,
    output: {
      format: 'iife',
      dir: 'public/_client',
      entryFileNames: '[name]-[hash].js',
      globals: {
        react: 'React',
        'react-dom': 'ReactDOM',
        '@emotion/core': 'emotionCore'
      }
    },
    plugins: [
      manifest.record({ publicPath: '/_client/' }),
      babel({ exclude: /node_modules/ }),
      json(),
      resolve(),
      commonjs({
        namedExports: {
          'node_modules/react/index.js': [
            'createContext',
            'createElement',
            'forwardRef',
            'Component',
            'Fragment'
          ]
        }
      }),
      replace({
        'process.env.NODE_ENV': JSON.stringify(env)
      }),
      url({
        limit: 5 * 1024,
        publicPath: '/_client/'
      })
    ]
  };
});

const secretKey = require('./secretKey');
const fnsPkg = require('./functions/package.json');

const fnsDeps = (dev
  ? Object.keys(fnsPkg.dependencies).concat(
      Object.keys(fnsPkg.devDependencies || {})
    )
  : Object.keys(fnsPkg.dependencies)
).concat('react-dom/server');

const functions = [
  {
    external: id => true,
    input: path.resolve(__dirname, 'modules/functions/index.js'),
    output: { file: 'functions/index.js', format: 'cjs' },
    plugins: [
      babel(),
      json(),
      replace({
        'process.env.NODE_ENV': JSON.stringify(env)
      })
    ]
  }
].concat(
  [
    // 'serveAuth',
    'serveMainPage',
    'serveNpmPackageFile',
    'servePublicKey',
    'serveStats'
  ].map(functionName => {
    return {
      external: builtinModules.concat(fnsDeps),
      input: path.resolve(__dirname, `modules/functions/${functionName}.js`),
      output: { file: `functions/${functionName}.js`, format: 'cjs' },
      plugins: [
        manifest.inject({ virtualId: 'entry-manifest' }),
        babel({ exclude: /node_modules/ }),
        json(),
        resolve(),
        commonjs(),
        url({
          limit: 5 * 1024,
          publicPath: '/_client/',
          emitFiles: false
        }),
        replace({
          'process.env.CLOUDFLARE_EMAIL': JSON.stringify(
            process.env.CLOUDFLARE_EMAIL
          ),
          'process.env.CLOUDFLARE_KEY': JSON.stringify(
            process.env.CLOUDFLARE_KEY
          ),
          'process.env.DEBUG': JSON.stringify(process.env.DEBUG),
          'process.env.NODE_ENV': JSON.stringify(env),
          'process.env.NPM_REGISTRY_URL': JSON.stringify(
            process.env.NPM_REGISTRY_URL
          ),
          'process.env.ORIGIN': JSON.stringify(process.env.ORIGIN),
          'process.env.SECRET_KEY': JSON.stringify(secretKey)
        })
      ]
    };
  })
);

module.exports = client.concat(functions);